<div class="post-date text-center">
  <span>
    {{ partial "header_date.html" . }}
  </span>
  {{ with .Params.tags }}
    • 
    <span>
    {{ $elements := len . }}
    {{ range $index, $element := . }}
      <a href="/blog/tag/{{ $element | urlize }}/">{{ $element }}</a>{{ if gt $elements (add $index 1) }},{{ end }}
    {{ end }}
    </span>
  {{ end }}
</div>